package login;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

/**
 * @Question IndexServlet
 * @Date 2022/10/15 18:05
 * @Solution
 */
@WebServlet("/index")
public class IndexServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        HttpSession session = req.getSession(false);
        if(session==null) {
            resp.sendRedirect("login.html");
            return;
        }
        String username= (String) session.getAttribute("username");
        int oldNum= (int) session.getAttribute("num");
        session.setAttribute("num",oldNum+1);
        int num= (int) session.getAttribute("num");
        resp.setContentType("text/html; charset=utf8");
        resp.getWriter().write("当前用户为："+username+" 登入次数："+num);
    }
}
